I am a newbie Arduino world. I have macbook pro Big Sur OS and Arduino Uno kit, just installed arduino ide software to the computer. I wrote the first "Hello WORLD"code, but I get the following error message
Error opening serial port /dev/cu.usbmodem14401
"uploading to board". Arduino: 1.8.13 (Mac OS X), Board: "Arduino Uno"
Sketch uses 1622 bytes (5%) of program storage space. Maximum is 32256 bytes.
Global variables use 204 bytes (9%) of dynamic memory, leaving 1844 bytes for local variables. Maximum is 2048 bytes.
avrdude: ser_open(): can't open device "/dev/cu.usbmodem14401": Resource busy
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
How can I solve this problem, I am awaiting your help with great gratitude.
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.